The former prime minister, Noah Gibun, is revealed to be an outsider. Like Diablo, she's a player of the MMORPG who came to this world. In order to defeat the Emperor and his overwhelming power, Noah recruits Diablo and the young Demon Lord Klem into her ranks. At first, Diablo's fear of social interaction made him refuse, but eventually... “I admit it. You are the leader.” “Thank you, Diablo. I will do everything to answer the trust you’ve placed in me.” Diablo finally decides to fight in a party...?! This is the fourteenth volume of the adventures of an earth-shakingly powerful Demon Lord (or at least someone who acts like one) taking on another world!

CHAOS IN THE CATHEDRAL With Zircon Tower safe, Diablo and his crew turn their attention to the corrupt Cardinal Council. But danger lurks beyond the church walls, as Diablo realizes once again that not even powerful magic and enchanted gear can level up his ability to talk to girls.

Diablo, Rem, and Shera have arrived at the Bridge of Ulug only to discover that an army of Fallen are marching towards Faltra! This should be no problem for a powerful Demon Lord like Diablo...except that Diablo is actually Takuma, a video game addict who's in way over his head. Will Diablo's stats hold up in a real-life battle?

With Zircon Tower safe, Diablo and his crew turn their attention to the corrupt Cardinal Council. But danger lurks beyond the church walls, as Diablo realizes once again that not even powerful magic and enchanted gear can level up his ability to talk to girls.

X MARKS THE ROT In Zircon Tower, Diablo and his companions have hit rock bottom. Batutta–the Paladin captain behind the frontier city’s deadly outbreak of Marked Death Disease–has captured Rem and Lumachina, and plans to use them for his nefarious scheme. But when Diablo ventures underground to save them, Batutta deals a debilitating blow to his left arm. Severely wounded, and unable to use his most powerful magic, has Diablo finally met his match?

SWEPT AWAY In order to cure the Marked Death Disease, Diablo must raid his own dungeon to retrieve a healing talisman from his treasure trove. But when lowly adventurer Horn is carried off by a raging underground river, Diablo must leap in after to save him! Meanwhile, Rem, Shera, and Lumachina continue on as planned, only to encounter a Black Dragon!

"I admit it. You are the leader.""Thank you, Diablo. I will do everything to answer the trust you've placed in me." As it just so turns out, the former prime minister Noah Gibun is an outsider--a Cross Reverie player who was pulled into this world--just like Diablo! She desperately wants to defeat the Gelmed Empire, but due to their overwhelming power, she has to recruit Diablo and the young Demon Lord Klem. The antisocial Diablo wants no part of this! Will he be able to deal with fighting alongside a party for the first time ever? Will he finally overcome his social anxiety? This is the fourteenth volume of the adventures of an earth-shakingly powerful Demon Lord (or at least someone who acts like one) taking on another world!